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Description
小學生必備的100個科學知識: QR CodeSTEAM * * * * QR Code * * 25100
作者: 星島教育
無葉風扇、時鐘、單車、QR Code、電池、糖果、汽水、消毒用品…這些小朋友熟悉的身邊事物，處處都藏着有趣的科學應用；小學的STEAM教育着重以科學知識解決真實問題，日常生活就是最好的科學課堂，從身邊事物激發好奇心，學習背後的科學原理，是培養小朋友自學力、打開科學探索之門的第一步。
有趣的科學知識遍布日常生活，你可知道：
* 無葉風扇的風與飛機飛行，都應用了同一科學原理？
* 世上最準確的時鐘是以化學元素為驅動力？
* 無人駕駛的單車滾落斜坡時，懂得自己平衡？
* 為何QR Code底部有圖案，仍然可以讀取？
* 為冰川蓋被子可以拯救冰川融化？
* 消毒酒精是萬能的消毒劑嗎？
本書精選25個科學常識主題，內容涵蓋五大類别：生活應用、人體奧秘、地球科學、食品科學、看不見的微生物，書中以貼近生活和世界發展主題，連姞100個小學生必備的科學知識點，每篇同時設有「陽光劇場」漫畫，以生動有趣的方式，深入淺出講解與主題相關的科學知識及原理。
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4.8 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Great watch!
Style: Dress, Color: Gold Tone Stainless Steel
BEAUTIFUL WATCH and excellent horology you would expect from Citizen.
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Great Buy
Style: Dress, Color: Two-Tone Gold/ Blue Dial, Style: Dress, Color: Two-Tone Gold/ Blue Dial
Stunning watch!! Purchased for my boyfriend for his birthday. He is a bigger guy with a larger arm/wrist so the size of this watch looks great on him. He receives a ton of compliments on it, and it still catches my eye every time he wears it. Decent weight without being too heavy (he reports). Perfect to wear as a daily watch or dress up with
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
★★★★★ 5
Quality and “Executive” Look
Style: Dress, Color: Two-Tone Gold/ Blue Dial
Quality you come to expect from Citizen. Looks and feels like a more expensive watch without busting your wallet. I get the most compliments on this watch over any other I own!
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Reviewed in the United States on April 18, 2025
★★★★★ 5
For the money you spend, you can't beat it.
Style: Dress, Color: Two-Tone Gold/ Blue Dial
Citizen has the best watches for the money you spend. Can't beat the prices.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
It all good
Style: Dress, Color: Gold Tone Stainless Steel
Very nice watch love it and the price
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Reviewed in the United States on June 6, 2026